Shut-off valve



- Dec. 16, 1930.

c. H. BLIVE N v 1,785,475

SHUT- OFF VALVE Filed April 12, 1928 2 Sheets-Shet 1 Patented Dec. 16, 1930 cHARt s HY. ianrvniv', or. vonrotir, VIRGINIA srrUr-orr new: I

Application filed. April 12,

This invention relates to water distribution and has special reference to a house line shut off valve j v In the carrying of Connections from water 5 mains into buildings it is customary to place in the so-called house line, in a place easy of access from outside the house, a controlling valve by which the water may be turned on to i the operating means for the valve, commonly termed the key, is inserted.

With the above and other objects in view as will behereinafter apparent, the invention consists in general of certain novel de. tails of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings and specifically claimed. d V In the accompanying drawings like char 7 acters-of reference indicate like parts in the several views, and! 1 V Figure 1 is. a vertical section through one form of the valve wherein the arrangement is such that the valve itself is located well 3 below the frost line.

Figure 2 is a plan view thereof- Figure 3 is a section on the line 3- of Figure 1.

Figure .4 is a side elevation of a left hand threaded valve seat used'herewith.

Figure 5 is a perspective view of one form of key adapted tobe used herewith. V V

Figure 6 is aview similar to Figurel showi ing a modified form of valve actuating means in connection with the type of valve shownin Figurel. 7 i

Figure? is a view showing a key for use with the modification shown in Figure 6. I

50 FigureS is a view showing a modified jar lTaremaderight handed In the enlarged 8 portion surrounded by the threads 17there valve seat 19st its lowerend.f' Screwed into the valve. The valvefeo is provided at 'its =upperfend with afsuitable socketflfz for the T 1928. Serial No. 269,381; i

rangement wherein the house pipe lies 'close' to the surface ofthe ground.

5 In theTfor-mshown in the, various figures the bodyof the valve constitutes a T fitting having a vertical run10 and a lateral branch 55,

11 L To the bottom end of the vertical run is screwed the supply pipe l2'and from the branc h -ll exten'ds the house pipe 13. Just above the upper endof-thesupply pipe '12 the vertical run is provided with an upwardly facing bev'eled valve seat 14:;wliich lies slightly below the openingof the branchll. 'F-rom this valve seat there extends upwardly interinal threads 15 which are here-shown as right handed-and these 'threads extend'soinedis 55, 1 tanc'e' aboVetheopening of the branch 11. J At the upper end of the threaded portion- 15f theborefof theirun 10 enlarged to' fbrni' a shoulder f 16 and this enlarged portion a is threaded int-ernally with threads 17 which 1 are-here shown as lefthanded; It isto be noted that one of the important features of this invention isthatthe threads 15 and 17 shallQ be ofopposite hands, but 'it" is to be understood that it isf not essential that the threads 15- shall be right handed and the threads =17Jleft I handed since the threads 15 may be lefthanded-provided that the threads screweda sleeve-18whichrQ$ts against the shoulder 16 and has a; "downwardlyfacing the lower threaded portionbftherun is a valve 20 having; beveled ends 21ffor'engagemen-t with-the respective'valve. seats 14- and 191 accordingly as the valve. '20 is screwed idown or up? Now it'will observedth'at when-the valve 20 is' screwed up so that-I its upper endlengages the valve seat 19' there is no tendency to unscrewkthe sleeve'i 18 carryingthatvalve s iaftbeeaeet threads on'the I sleevelare of'oppositeihand to the threads on key or operating means fandjsimilarlyi the eat-r ng 1.8 is 'proviclectwith screw kerfs 23.. Fb 'iqp i g fli' a e d 'seatiring a T .100 I ate ke He' her efie eedi e of proper proportions to fit across the ring 18 and into thekerfs 28 and also having an arm 25 for fitting into the socket 22.

In the form of the device shown in Figure 8 the top end of the T fitting is still further enlarged and internally threaded to receive a closure cap 26. In the form shown in Figuresl, and 6 a tubularextenslon 27 1s secured in the top end of the T, which in this instance is unthreaded,by a threaded pin 28 andthis extension fits-intothe lower end of" ,the street 'box 29, being secured thereto by the screw 30. The street box, in this case, is

' provided with a threaded closing plug 31.

1" V valve operating stem 32 has its lower end seated in the socket 22 and its recessed upper In the form shown in Figure 6 a permanent theplug being adapted for engagement by 1 an operating element passed downwardly throughsaid r1n-g.'--- I In testimony whereof I affix my signature.

CHARLES H. BLIVEN.

end 83 located in the upper end of the extension 27' so that the expansible lower :end 34 of a key 35may be inserted in the recess, the

end 34 being expanded by-the wedge cone 86. l Thiswedge cone is on the lower endof a stem 37. for extension up throughthe hollow tubu- I lar portion of the key 35 andhas a nut handle 38 fitted on its upper end to draw thecone upwardly or release the same as the handle is rotated;

isclaimed asnew, is:

Obviously when thelvalve. 20 is screwed to its: uppermostpositionit prevents any;

leakage of water into the street .box' while,

whenvscrewed down, it closes off both street boxand house. r

There has .thus been providedja. simple andefficient 'device of the kind described and *forjthe purpose specified. 7 v

It is obvious'thatminor changesmay be made in the form and construction'of the invention without departing from the material spirit thereof; It is not, therefore desired to confine the invention to the exact form herein shown and. described, but itis I desired to includeall such as properly come within the scope claimed 1 q a invention, what I Having thusdescribed the A] stop valve comprising T have ing a vertically disposedrun and aclateral V outlet arm intermediate its ends, the lower end ofthe vertical run being adapted to be connected with a supply pipe, an-upwardly ifacing valve seat in' said run below the outlet ing of increased internal diameter to form a socket,'the walls ofthe ru n being threaded in one direction betweenithe valve seat and lower end of the socketland the walls of the socket being threaded infaniopposite. direc- Y tion, an externally threaded ring screwed tightly. intosaid socket and having its lower end shaped, to'defineia. valve seat exposed A through the bottom ofthe socket, the upper 5 m e W ench When 1i ,Se Iftingand lll-ovmg'rthifing a hr ade a ve plug a a :Screwed i llll b'QtWen'the ldvver 7 portion ofthe ringbei'ng adapted for engagearm, an upper portion of the vertical run begaio' V no 

